Tachometer.



M. HOEFT.

TAGHOMBTER.

APPLIUATION FILED AUG. 19, 190s.

1,005,035. Panta 001;.3, 1911.

'l SHEETS-$3331' 1.

6 5m @mmr M. HOEPT. TAGHOMBTEB. APPLIuArIol'v rum AUG. 19, 190s.

Patented Oct. 3, 1911.

v Sanna-suur a.

IVI/7759555 M. HOEPT.

TAUHOMBTER.

APPLIUATIOH PILBn AUG. 1a, 190s.

Patented Oct. 3, 1911.

'l SHEETS-SHEET 5.

M. HOEPT.

TAGHOMETBB.

1,005,035 APPLICATION FILED AUG. 19, 190B. oct. 3

7 BHEETB-BBZET 6.

.6MM am A m Patented ct. 3, 1911.

7 SHEETS-BEBE Halt! e; Mv' :71706008 showin vice with the motor driven UNITED STATESV PATENT OFFICE.

usxnonrr, or BERLIN, ennmnwv TAOHOMETEB.

Bpeollloation of Letters Patent.

Applloition led August 19, 190B.1 Serial No. 449,285.

To all whom it may concern: r

l Be it known that I, MAX Honr'r, a sub ect of the King of Prussia, residin at Ber in, in the Kingdom of Prussia and erman Empire, have invented .new and useful Improvements in Tachometers, of which. the following is a specification. r

My present invention relates to improvements in tachometers etc.- Ioit' the kind in which the speed of the vehicle or the like 1s recorded, or printed, either periodically or on changing the speed, or on o rating any one or more parts of the vehic e or motor, such asthe brake, steering wheel. A

According to, my invention the actual printing motion, for example the pressing of the type against the paper, or-the liketon which' the record is to be made, is not carried out by a clockwork spring or weight adapted to be Wound'upl shaiil, or some other part, driven by the motor or by the force of the Aerson moving some operative part of vthe ve icle or motor.

4The printing is thus effected with the greatwork 4as well as the frontend disk of the pa per roll and showingthe casing in section. `ig. 2 a similar view showing the front plate in positionfa Fig. v3a plan after re,

movin t e to plate and the upper paper roll, 41g. 4- aorizontal section on the line A-A in Fig. 1, 5, "a back elevation the casing in section, Fig. 6, a verticalsection of the -iuinp used by way o'f example as'speed indicator, Fi 7, a cross section on the line B-B in Iig. 6, Fig. 8, `a dia ammatic view of another construction of t emechanism for connecting the printingapparatus with the part driven by the motor, and'Fi 9, a dia rammatic view of an electric device to coup e the printing clepart.

The `disk 1 is .rotated to and fro, according as the speed ofthe vehicle or the like increases or decreases,'by la pump 2, which ,ing 5 into the periodically, but either by. coup ing ille printing mechanism with aA up a' comprises three cylinders, which suck oil or some other liquid contained in the casing 3 and force the same into the cylinder 4, from which it .can escape throu h the opencasing 3 ain. he piston 6 in said cylinder 4 is raise therefore more or less according to the speed at which the pumps 2 are operated, and the piston rod 7 turns the link 8 about the spindle 9, on which is secured a. spubwheel 10. Said s urwheel 10 drives the smaller spur-whee 11, to which is secured a larger spur-wheel 12 enf'aglin with the smaller spur-wheel 13 attac e Y to the disk 1. It will be seen therefore that the gearing 10-13 will exag erate the motion given to the piston 6, so t at a comparatively small movement of said piston will turn the disk 1 throu h a comparatively large angle. To the isk 1 are secured pins 14 into the path of which proects the pawl 15, ivotally secured to the ever 16, which is a apted to turn about the screw 17, to the lower end of which lever is pivotally secured the pawl 18, which bears a einst the upper end of the lever 19 adapte to turn about 20, the lower end of which lever 1Q has a hook form and normally holds the pin 21 attached to the lever 22. Said lever 22 is thus ke t normally out of engagement with the tootlli3 a sun and lanet gear and as a consequence the front disk 24 of this sun and' planet gear, which disk carries the inions 25 engaging in the central spur-.whee 26 and in the internal rteeth 27 of the crown, remains stationary, so that the pin 28 4secured to the disk 24 is also stationary. The central spur-wheel 26 of the sun and planet gear is driven continuously by the/motor or vehicle through Vthe agency ofthe s ur-wheels 261 262,26", 26* and shaft 26". lf, now, one of the pins 14 of the disk 1, owing to the speed reaching a certainA limit, strike against the paw] 1,5 in the direction of the arrow, the lever-16 will ,be turned about 17, and, as soon as the piu 14 slips past the pawl 15, the lever 16 will be returned into its rstposition so that the pawl 18 will strike the upper end of the lever 19, which will therefore be turned about the plm 20 and the pin 21 will be released, so t at the lever 22 can fall into engagement with the teeth 23. The disk'24 of the sun land planet gear, which was forstationary, will ,therefore now be ro'- merly `tate sso that the pin 28 will raise the 'lever 29,

aid lever 29 is connected by the rod ed crown 23 of l:iv p

adapted tp be 30 iwith the laver filpivot'ed at 32 and carry- .is Secured .ing in 4or .M secarexllto thelever 55.

ing the han-inner 33. As soon as the pin .58 leaves the lever 2t) this lever will fall and the hammer 33 will be struck suddenly owing to the action ol the spring 154 against the paper 35 and press the saine against the type ribbon 36, so that the type ol" thetype wheelsl 37,37", 257", 3T and type segments hereinafter explained will be printed on the paper. In falling the lever 29 will reise the pawl 38 secured thereto' into contact with the pin 39 secured to the lever 22, so that this lever will be raised sufficiently high to enable the pin 2'1 to come into engagement with the hooked endot the lever 1l). A stop 39 is arranged to arrest the leverQQ so that it cannot rise higher than snllicient to allow engagement of pin 9.1 with hook 19. The toothed crownA ofthe sun and lanet gear being thus released it will begin to rotate, sotliat the disk 254 and 'iin E28 will become stationary. Im? mediately after the han'nner 33 has elteeted theprinting, the pawl l0 pivoted to the lever 2.9, in rising, which it oes when the lever E29V falls down into its normal position,

will turn theratchet wheel 4:1, so that the paper strip will be wound to a suttieient ,extent on the bottoin roll :l2 to Amake room for a second record. The type wheel 3T is of course rotated in exactaceordance with the speed o the vehicle or the like in question, and, for this purpose, a spnnwheel 43 to the4 disk 1 which engages in a spur-wheel 44 secured to the type wheel 37. The type4 wheel 37 shows thetime and is turned by clockwo; of any Suitable l-:-1nd,whichis omitted in he 4drawl er -not to render the salme unintelligible, While the disks 37 and 'lb'show the date and month respectively.

In the above description it has been shown how the printing device is put into opel-w tionin order to prlntthe speed, time, date and mont-h, when certain limits of yspeed are exceeded. It is intended, however, to also print the speed when some organ of the vehicle or motor, for example the brake, steering wheel or 1 -nitenis o erated. Supposi'ng for exam e that the withall rod 5, so that, on operating the brake, said rodgwil'l be raised, Ithen the rod and 48 will also be raised so 49 'carried by said rod will the `pin 50 and thus tarn the l52. In' the' lever @l that thepawl strike against lever l'5l about the screw therein a'slot 53, into which projects a. pin This vlatter lever turns^iabontthe screw 56 andwill raise the rodgO'when t-liepfawl 49 raises the pm 50. Consequently; `the lever 31 4will also he raised, andmsfsoon as the pawl 4l) passes the pinv 50, the printingof the speed, t1me da.te and month will he effected by the spring 34 in the'manner above explained.

It is preferable to connect the rod 46 with position of continuously rake is connectedV a type segment 57, on which Vthe letter B can be provided, so that this letter will also be printed on the paper B5 and show that the brake has been o e1ated.

In Fig. 2l similar segments are shown for the horn and tol' the steering .vlieel, the let ter .l-l denotinr the horn, While the letter 11" will show tint the steering wheel has been operated toward the right, the letter L being provided at another point. on the same .segment to show when the steering wheel is turned to the left.

Each time the printinfr mechanism is oprated the s eed,time, ate, month and the t te operative parts of the vehicle or motor `will accordingly be recorded on the paper 35. The printing motion is carried ont by the inotlve power when the irlnting organs are nit into action by the tac ometer disk 1, whi e the printing, on moving some operative parte, such as the brakc,steering wheel, horn, ete., is effected by the force ex.- erted inmoving said parts, or, more acenrately, by the rebounding motion o'l the hammer 33 under the iiilnence o the spring; 3ft, which is stretched in operating the brake, ctc.

ln the construction sketched in Fig. 8 the printingp is elected by' the ,motive power in all eases, that is not only7 when the rnting organs are released by lthedisk 1, ut also when an operative parl of the vehicle or motor, is moved. "l'lie disk l is turned also in this easetby the .tachonieter and is provided with a number ot pins .14, which at certain limits of sneed strike against the pawl 15 and thus turn the lever 16 about the screw 17, so that when the latter rebounds ander the influence ,ofthespring ltthe pawl 18 will rotate the star-wheel S2 through a'spaee equal to half the distance between two teeth of said star-wheel.' The star-wheel is restrained inv its movement by a second star-wheel 82 .secured thereto and having twice as many teeth between which the spriiig pawl 82" enoageS. The disk 83 is rotate( bythe motor so that the pin Si secured thereto will strike against the tooth broughtbylthe pawl 18 into the path thereof and thnstnrmsaid -star-wheel 82 through the remaining half of the vdistance between twoteeth o t ing the latter movement of the star-wheel 82 a tooth of said wheel strikes against the end of the lever 85 and this motion irl-transferred to the rod 30, lever 31 and hammer 33, which in rebounding effects the printing under-the' action of the spring 34.

'lo the lever V85A is secured a pin 87, which engages in amoove of they twofarmed lever l Ot,-

his wheel.' Dnri aan the bottom-gna of which a w1 87 is provded, whi -h turns a star-fwn B8 inthe sprin vided on the levir fectedhby the pin 84 and `vhe'n said etarwhcel 88 's turned by the pin 84 'it strikes 'against the free end of the lever 89, which, nI returning under the influence of the 89* turns the `ratchet wheel 41, provideV on the paper roll so that the. paper is transorted as describe above in `connection with ig. 1 and the motion of said piipeiroll is transmitted to theA ink ribbon by suitable mechanism of the kind described below with reference to Figs. 2 and 3. The-moveiiient of the lever 89 under the infiuence of the spring 89"L is restricted. by the stop 91. On moving lan operative' part ofY the vehicle'or motor a rod 46 vis ihoved in the manner described above with reference to Figl, To said ,rod ,46 is secured a pawl 49` adapted -to strike against the pin 50 provv l 51. SaidI lever 51 turns right-52 and basa slot 53,

vthe screw'.r 54, secired tol the rod 94, which` has a longitudinalslot. 95,l to receive two screws 95 and 95, servin to;y uie said rod 94,. At the bot-torn en of t'erod 94 is provided a pawl 9'4, ai'iapted` to act in exactly the Samewa'yon: theater-wheel 89 asthegpawl ,18, whenthe rod 46 has raised the left end of the 1ever`" 51 `and this lever returns into its first position under'the iii iiuence of the' spring 96. 'A stop 97 limits the return mover ei'it of 'the lever 51. It will be seen -therefioiie that with this arrangement the printinggis -eil'ected in every case by the Arnotivefliorce, that is, not only when the printing or ans are' utl into action by' disk 1) gilt also when some the tachom'eter operative part of ,the 'vehicle or motor is m'ved. i

The'ink ribbon. 7f3 (Eig.

bevel whe is 4rovded on fille roll '42,

' which bevel wheelf` n ages in a. second bevel wheel 62, keyed ,"onltlie s indle 63 to the.

otl'ierend o f which is key the bevel wheel 64, which engages in toothed'wli'eel 65.

l Fei; end of the shaft 66,' is fastened t e creasing or, w fw* turned bevel wheel which'engages in a, second ,bevel wheel 71, by whiclitthe ri'bbmiel'oll`72 is turned, so as to windthe ,vibboi'i' thereon, it beingl unwonnd from-the-rdll 74.

In the arra ement shown in Fig; 9" the printing devi and theshaft of the vehiclel or motorarefeoiipledtogetherby means, atA i the" eleetiieeurvent ai staravheeifi, `which come ainda .with the disk 11i- ,Y l une d1- rectioii' orth'e other,

in which engages,

: 1) isdriven by. the lower iaier roll, for which,V purpose a.

tbi case 1 on t-he levers 16, 1,6IL is the same as except lthat wo levers, namely 16 and 16, are provided, in order to put the printing mechanisml into action when the disk l moves both ways, that is according as the speed rises or felle. Supposing, for exam le, that the wheel 1 is tur-ned throu h a su icient angle to cause one of the tcet 14 to strike against the'pawl 15 and 15'L then .the pawl V15'will turn on 'its axis without- -inoving the lever 16, while the pawl 15 will be ressed against its stop and will, according y', rotate the lever 16, so as to cause the 4pawl 18 at the lower end of said lever 16 to touch thefcontact a. The circuit'of the battery will therefore be closed, so that the electromagnet r will be excited and wiiltattract the. armature, p1 on the lever p Asa consequence, the lever .p Will 'be rotated about thejpin p and will -causethe paw] q to strike which i ns about d, so that the arm g provided on the cam la, will be rele sed from the right end ofthe lever t' and wi l accordingly rotate inthe direction of the' arrow by a Spring acting thereon. The cam h will release a pin on 4the top end of the lever Ic, so that the leveiiQ-can fall.V This lever 29 corresponds withl the lever ,29 of-Fig. 1, and is soA` arranged that, on falling, the ,rnti'ng' .organs are put into ration. The lever 29 is raised again bylt e pin 28 on thedisk 24 driven continuously bythe motive power. The pin on the leverde being -their guidedl by 'the spring into erigagementfwitli the cam h again. In rising, a'progection 29* on the lever 29 raises the` lever so that the contained in the ltoothed casing o e wound u and the tension of'this sprin will be ransferred by the spurwhee o1 tothe cam h, which will therefore again have the tendencg; to tum in the die rection ofthe arrow, w ich however it cannot'do, until the arm gis released bythe stop at' the right end ofthe lever c. The Iapi-ing. is kept under tension by the pawl m en aging'in the ratchet n. 0 l

v s an exam lehow the'Frinting device maybe 'coupledp with the sha tof `the vehicle or motor when the operative parte of the 'vhicle orF inotor-ued moved thil liloijn is e en'in ,95, e reseingt e everu og l,iich `is f th spi-in will the. horn, w o e'electric t pe, is

s 4ato Halt) can be 'vfen for the digldaiic) di other vehicles gh the road. 'the driver intends to stop by pressin et ris again excited, 'so that the electroma l so the printing device is opmieiy against the'left. end of the lever c, t r

plained a ove with reference to Fig. 1, ex-

magnet "ris excited, so thattle-agparati'is v t is a press button, by lmeans o which the this `i'lttion electric .contact is made am 1 isp It is immaterial what kind of tacliometer is used or whether a distance recorder is adapted to release the printing device, as only the manner of carrying out the print ing forms the subject-matter of my present invention.

What I claim and desire to secure by Let ters Patent of the United States is 1. A rinting device to record the speed of a ve iicle and the like, comprising in combination, type wheels operated inaccordancewith the speedof the vehicle, mechanism to print from said type wheels, e mechanicapart continuously moved by the vehicle, and means to couple said mechanical art withsaid mechanism, substantially as, and for the purpose, setV forth.

2. A println device to record the speed, of a vehicle an the like comprising in com binatiom'a mechanical part driven by the vehicle, type Wheels adapted to be driven in accordance with thev s eed of the vehicle,

type Wheelsadnpted to e moved when theI operative parts of lthe vehicle are actuated prmtlng mechanism to printf-orn'all' sai -type wheels, and. r`nean`s to couple said printing mechanismv with s'afifd vehicle driven mechanical part, substantially aeeet forth.

3. 'A- rin'tin device to record the speed of 'ai vehicle an -the like, com' rising in com# bination, type wheels o-.- crate iii accordance with the speed of' t e vehicle, printing mechanism adaptedv to-` print from' said wheels, a. mechanical part driven by the vehicle, mechanism o erated in accordance with the speed of sai tachomeber and adapt ed to connect'eaid printin mechanism with said part. driven by the ve icl c, and mechanism Ato operate seid printing mechanism independent of said parbldriven by'thefvehicle substantially as, and for the purpose, set forth. 4

4. A rintin of a vehicle an the like comprising in cominflation, type Wheels dlven according to the `speed to be reeoidei, ,printing mechaniemto 4presa against said type wheels, a Sun and planet gear comprisng n. central motive viven spunwhee an 'internallly' and ex ternally toothed crojwn, pinions connecting seid cent1-al spur-wheel with 'said crown, a

disk to carry said pinionsgand apin attached device ign; recordI the speed to said disk; a lever adapted tobe brought in and out of engagement with theexternal teeth of said crown, and mechanism adapted to be moved 'by said pin end to o erarte said printing mechanism, eubstantial'y as, and

for the purpose, Sei; forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. ,i

. MAX HOEFT. s V'itnesses:

Wenonm HAUPT,

HENRY Ekeren; 

